Some pictures of my 3 rail Gaiety, which runs on my 3 rail layout or it did until the gear wheel was worn down completely by the worm gear (is that the right order?). I have moved the gear forward a little bit with the aid of a screw driver and has re-engaged and will just about run. I don't have the skills to replace it as this would mean dismantling the motor completely - way above my expertise level. Still I hope you enjoy the photos if I manage to upload them.